very large dry common sunflower or helianthus annuus annual forb flowering plant with edible oily seeds in flower heads growing in

large dry common sunflower helianthus annuus annual forb herbaceous flowering plant edible oily seeds flower heads consisting numerous small individual five petaled flowers high erect rough hairy stem growing local urban home garden warm sunny autumn day agriculture nature field leaf landscape leaves grow tree bush grass food foliage flora green natural